Degree bevel



J. B. HAGEN DEGREE BEVEL Filed March 27, 1941 Sept. v1, 1942.

2 Sheets-Sheet l Sept.v 1,1942. J. B. HAGEN DEGREE BEVEL Filed March 27, 1941 '2 Sheets-SheetI 2 11 4 1 (B. Hagen m vZfi -WQ Patented Sept. 1, 1942 UNETEE STATEZS OFFICE 3 Claims.

This invention relates to an improved measuring t'col adapted for use by mechanics generally and by shipwrights and carpenters in particular, and which combines the functions of a bevel or bevel square, a bevel protractcr, and a carpenters square.

More particularly, it is an aim of the invention to provide an instrument of simple construction capable of being economically manufactured and sold, which may be readily adjusted and which, when not in use, may be folded similarly to a jackknife and conveniently carried in a garment pocket.

More particularly, it is an aim of the invention to provide an instrument especially useful for marking bevels on planks and by means of which the degrees may be obtained directly rather than by the usual method of marking down the bevels, transferring to a degree board for degrees and thereafter marking the planks.

Still a further aim of the invention is to provide an instrument particularly adapted for use by carpenters as a square or for measuring for any out up to 45 degrees.

Other objectsv and advantages of the invention will hereinafter become more fully apparent from the following description of the drawings, which illustrate preferred embodiments thereof, and wherein:

Figure 1 is a side elevational view showing one embodiment of the degree bevel in an open position,

Figure 2 is a side elevational view of the same but showing the instrument in a closed or folded position, and with one section of the blade body member removed,

Figure 3 is a horizontal sectional view taken substantially along the plane of the line 3-3 of Figure 1,

Figure 4 is a vertical sectional view taken substantially along the plane of the line 4-4 of Figure 1,

Figures 5 and 6 are cross sectional views taken substantially along the planes of the lines 55 and 6-5, respectively, of Figure 2,

Figure 7 is a longitudinal horizontal sectional view taken substantially along the plane of the line l-l of Figure 2,

Figure 8 is a side elevational view looking toward the inner side of the section of the blade body, provided with the recess for receiving the pivoted arms, and

Figure 9 is a side elevational View of a slightly modified form of the instrument.

Referring more particularly to the drawings wherein like reference characters designate like or corresponding parts throughout the different views, and referring particularly to Figures 1 to 8, l0 designates generally the degree bevel in its entirety and which includes a blade body, designated generally II and a blade, designated generally 32. Th blade body ll, like the blade I2, is an elongated substantially flat member formed of co -extensive sections l3 and I4 having rounded ends, as best seen in Figures 1 and 2. The blade i2 is provided with a rounded end l5 which is disposed between corresponding ends of the sections l3 and I4, and which is pivotally connected thereto by means of a pin Hi. The end l5 provides means for spacing corresponding ends of the sections l3 and I4, and as best seen in Figure 7, a spacing disk I! is disposed between the opposite ends of the sections l3 and It and secured thereto by a fastening Ila to position the sections l3 and M in spaced apart, substantially parallel relationship to one another to form the longitudinal slot l8 therebetween. The section l3, as best seen in Figures 5, 7 and 8, is provided with a recess I9 on its inner side and intermediate of its ends which opens into the slot [8, and the upper edges of the sections l3 and M, adjacent their free ends, and remote to the pivot l5 are provided with oppositely disposed arcuately shaped grooves 20, for a purposewhich will hereinafter be described. An arm 2| has one end disposed in the recess I9 and pivotally connected to the blade body II by a fastening 22 which extends through the section IS. The pivot 22 is disposed in longitudinal alinement with the pivot 15. An arm 23 is pivotally connected at one end thereof by a fastening 24 to the blad H2. The pivot 24 and the pivot l6 are likewise in longitudinal alinement, relatively to the blade I? and the distances between the pivots 22 and 24 and the pivot l5 are the same. The arm 23 is provided with an enlarged opposite end forming a protractor 25 which projects laterally therefrom and toward the blade body I I and which is calibrated as seen at 25 in degrees from zero to forty-five degrees on either side of its center. The free end of the arm 2| is pivotally connected to the arm 23 by a pivot pin 21 which is disposed at the axis or center of the protractor 25. The intermediate portion of the arm 2| is disposed over the calibrated side of the protractor 25 and said intermediate portion is provided with an opening 28 for exposing a portion of the calibrations 26 and with a pointer 29 which projects into the opening 28 and which terminates adjacent the outer edge of the protractor 25 for indicating the degree of bevel of the blade member I2 and the blade body II.

The blade I2, adjacent its outer edge and adjacent its outer end is provided with notches 30, on opposite sides thereof, which are disposed so that when the blade I2 is folded into the slot I8 the notches 38 will be exposed in the grooves 20. Notches 30 are adapted to receive a finger nail for grasping the free end of the blade I2 for moving it from a closed position, as seen in Figure 2, to an open position, as seen in Figure 1. It will likewise be apparent that when the instrument I is closed or folded, as seen in Figure 2, the blade I2 will be disposed in the slot I8, and as seen in Figure 5, the arm 2| will be disposed in the recess I9, the arm 23 will be disposed in the slot I8, between the arm 2| and the blade I2 and a portion of the protractor 25 will be projecting outwardly from the underside of the slot I 8. When thus folded, the degree bevel I I] may be readily carried in a garment pocket.

When the instrument II] is open, as seen in Figure 1, and when the pointer 29 is on the zero marking of the calibrations 26, the blade body II and the blade I2 combine to form a right angle and may be used as a carpenters square. By moving the blade I2 toward the blade body II the instrument In can be adjusted to desired acute bevels up to 45 degrees which will be indicated by the calibration 26 to the right of the zero marking, or by swinging the blade I2 in the other direction obtuse or standing bevels up to 45 degrees may be measured by the other portion of the calibrations 26. It will be readily understood, that if the blade I2 is moved to a position to form a 45 degree angle with the member I I that the pointer 29 will be over the 45 degree marking at the right hand end of the calibrations 26, or if the blade I2 is moved to form an angle of 135 degrees with the member II the pointer will be in line with the other 45 degree marking.

In Figure 9, a slightly modified form of the invention is disclosed, and comprises a degree bevel designated generally I0 and which is designed and adapted for use in the same manner as the degree bevel Ill but which may be conveniently constructed in smaller dimensions than the degree bevel I0 so as to occupy less space when closed or folded. The blade body II of the instrument I 0 corresponds to the blade body I I and its blade I2 corresponds to the blade I2 except that the protractor 25 is formed integral with the inner edge of the blade I2 and the arm 23 is pivotally connected at 24 to the blade I2 at the axis or center of the protractor 25'. The arm 2I' is pivotally connected at one end at 2'! to the free end of the arm 23' and at its opposite end at 22 to the blade body II, in the same manner as the arm 2|. Arm 2|, as will be apparent, merely forms a link with the opening 28 and pointer 29 omitted therefrom. However, the arm 23', intermediate of its ends, is provided with an opening 28 and an arrow 29, th head of which extends to the outer edge of the opening 28' to perform the same function as the pointer 29. Opening 28' likewise performs the same function as the opening 28 and is disposed over a portion of the calibrations 26' of the protractor 25', As the use and operation of the instrument I0 is identical with that of the instrument ID a further description of the modified degree bevel I0 is considered unnecessary.

Likewise, it is to be understood that both the degree bevels I0 and I0 are Well adapted for many other uses by mechanics and artisans and that only a few of the many uses of the instruments have been described and referred to.

Likewise, various modifications and changes in the construction and arrangement of the parts forming each embodiment of the invention are contemplated and may obviously be resorted to.

I claim as my invention:

1. A degree bevel comprising a blade, a blade holder pivotally connected at one end thereof to one end of the blade and provided with a longitudinal slot extending therethrough for receiving the blade, when in a closed position, said blade and blade holder being provided with straight longitudinal edges, arms pivotally connected to the blade and blade holder at corresponding ends of the arms, the opposite ends of said arms being pivotally connected and being arranged to form right angles with one another and with the blade and blade holder when said blade and blade holder are disposed at right angles to each other, and a protractor forming a part of one of said arms for indicating the degree of bevel of the blade and blade holder, and the arms and protractor being movable with the blade into the slot of the blade-holder.

2. A degree bevel comprising an elongated slotted holder, a blade having one end disposed in and pivotally connected to an end of the holder, said blade being foldable into the holder, arms pivotally connected at corresponding ends thereof to the blade and blade holder, said arms being pivotally connected to one another to form a right angle when said blade is disposed at a right angle to the blade holder, one of said arms being provided with an opening, a pointer associated with said opening, and a protractor forming a part of the degree bevel and disposed so that the bevel of the blade and blade holder will be indicated by the pointer on the protractor visible through said opening, said protractor forming a part of the other arm, and said arms and protractor being foldable with the blade into the holder.

3. A degree bevel comprising rules pivotally connected at corresponding ends thereof, an arm pivotally connected at one end to one of said rules and being provided with a protractor at its opposite end projecting laterally from said arm and toward the other rule, an arm pivotally connected at one end to the last mentioned rule and pivotally connected at its opposite end to the first mentioned arm and at the center of the protractor, said arms being arranged to form a right angle when said rules are at right angles to one another, and said rules, arm and protractor being movable to position said parts in a folded piosition by swinging the rules toward one an- 0 her.

JOSEPH B. HAGE'N. 

